The revolutionary event that took place in Russia in 1917 was the October Revolution, which led to the rise of communism. This event was characterized by the overthrow of the Provisional Government and the establishment of a government led by the Bolsheviks, a faction of the Russian Social Democratic Labour Party under the leadership of Vladimir Lenin. The revolution resulted in significant political and social changes, including the withdrawal of Russia from World War I and the eventual establishment of the Soviet Union, dramatically altering the course of Russian history.